Era

ERA

Abbreviation for electronic remittance advice.

effective radiating area

,

ERA

The area of a therapeutic ultrasound head that produces useful ultrasonic energy, measured in square centimeters (cm2). The effective radiating area is calculated by identifying all points where the ultrasonic energy is at least 5% of the maximum measured intensity at the transducer's surface.

Era

a division of geological time, such as Cenozoic, Mesozoic, Palaeozoic, which is itself divided into periods. See GEOLOGICAL TIME.

Bradord can still do it with a final match victory over Sheffield at Bradford (Hawksworth) on September 3 but only if Teesside slip up against reigning title holders Leeds at Woolley Park the same day.

Six times Premier One champions Frank Parker and reigning title holders Ridge Lane have seen their Tribune Cup ambitions come to an abrupt halt despite winning their first round ties in emphatic fashion.

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